[SOLVED] Not showing start- and endtime well in frontend

On the frontend of my website ( handelingen.com , under 'AGENDA') the start- end endtime of an event are not well shown.
For instance, when I've filled 15:30 as starttime in the backend, I get in the frontend: %15:%Sep.
In Settings I've set:
Form Time: H:i
Time Suffix: uur
Format Hour: H
What can be wrong?
Thanks in advance

Please give more infos: versions joomla, JEM...

First of all, my apologies: I gave the wrong link. It must be: handelingen.com/joomla4/
Joomlaversion: 4.3.4
JEM: 4.0.0
PHP: 8.1

Please check the time format settings in the basic module (not only in the general JEM settings).

Yes, that's it!
Thanks a lot.
So this topic can be closed